import javax.swing.$*$;

public class Application$\{$

public static void main$($String$[]$ args$)\{$

JFrame frame $=$ new Frame$("$Swing App"$)$;

frame.setDefaultCloseOperation$($JFrame$.$EXIT$\_$ON$\_$CLOSE$)$;

frame.setSize$(500,350)$;

IComponent Component $=$ new ComponentImpl$()$;

GUIBooster adapter $=$ new GUIBooster$($Component$)$;

frame.getContentPane$().$add$($adapter$)$;

frame.setVisible$($true$)$;

$\}$

$\}$

public class ComponentImpl implements IComponent$\{$

@Override

public void draw$()\{$

System.out.println$("$Component is drawn"$)$;

$\}$

$\}$

import javax.swing.$*$;

public class GUIBooster extends JPanel$\{$

private final IComponent Component;

public GUIBooster$($IComponent Component$)\{$

this.Component $=$ Component;

$\}$

@Override

protected void paintComponent$($java$.$awt.Graphics g$)\{$

super.paintComponent$($g$)$;

Component.draw$()$;

$\}$

$\}$

public interface IComponent$\{$

void draw$()$;

$\}$

Which design pattern is used?